Question

If the co-ordination number of $C{a}^{2+}$ in $Ca{F}_2$ is 8, then the coordination number of $F^{-}$ ion would be:

• A. 3
• B. 4
• C. 6
• D. 8

Answer 1

The correct option is B

4

$Ca{F}_2$ has fluorite type structure in which coordination number of $C{a}^{2+}$ is 8 and of $F^{-}$ it is 4.